If you have tried out the public Beta of Notes 9, you might have noticed that IBM has removed Lotus in the registry also. Earlier versions of Notes are stored in HKEY_CURRENT_USER\Software\Lotus\Notes but
Notes 9 is stored HKEY_CURRENT_USER\Software\IBM\Notes. This means that all software that uses the registry to find the client directories needs to be updated, as with my Utilities that is updated to work with a Notes 9 installation.

If you have a software that doesn’t work with Notes 9 there is a easy way to make it work

use this commandline to export the keys from HKEY_CURRENT_USER\Software\IBM\Notes

regedit /e ibm.reg HKEY_CURRENT_USER\Software\IBM\Notes

a file called ibm.reg will be created in the directory where you currently are write

Notepad.exe ibm.reg

Change all entries where the line starts with [ change IBM to Lotus

From: [HKEY_CURRENT_USER\Software\IBM\Notes]

To: [HKEY_CURRENT_USER\Software\Lotus\Notes]

when you have saved the file, double click on the file or run

Regedit.exe ibm.reg